form {
    width: 500px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);

    background: rgb(196, 218, 201);
    border-radius: 10px;
    padding: 10px;
}

.form-item {
    display: flex;
    align-items: center;
    margin: 10px;
}
.form-item .form-label {
    width: 70px;
    margin: 0 10px;
    text-align: end;
}
.form-item .txt {
    flex: 1 1 auto;
    height: 40px;
    padding: 0 10px;
    font-size: 10px;
}

form button[type='submit'] {
    margin: 0 auto;
    padding: 3px;
    border-radius: 10px;
    width: 100px;
    background: #2edd6e;
    color: #fff;
    cursor: pointer;
    user-select: none;
}

form button[type='submit']:hover {
    color: #000;
    box-shadow: 0 0 0 5px #fff, 0 0 0 7px #000 ;
}

.form-item.title  {
    justify-content: center;
    font-family: inherit;
}